Motor connection



P 6, 1932- c. s. BAKER 1,875,798

MOTOR CONNECTION Filed Sept. 12, 1929 1W5 ATTORNEY.

Patented Sept. 6, 1932 UNITED STATES ,OF C

CHARLES S. BAKER, 0F CORNING, NEW YORK, AS SIGN OR TO INGERSOIeL-EAND COM- PANY, OF JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY MOTOR CONNECTION Application filed September i ms. Serial 392,151; r

This invention relates to motor connections, but more particularly to a connection adapted to support a motor in operative relationship with an element intended to be driven, as for instance, the cable drum of a coal cutting machine. 1

One object of the invention is to assure against the chafing of a cable wound on a drum to which the motor may be attached.

Other objects will be in part obvious andv in part pointed out hereinafter. I

In the drawing illustrating the invention and in which similar reference characters refer to similar parts,

Figure 1 is a plan view of a coal cutting machine with its cable drum having the invention applied thereto, and

Figure 2 is an elevation, partly in section, of the invention illustrating in detail the manner in which it supports the cable drum and the motor.

Referring to the drawing, and at first more particularly to Figure 1, A represents a coal cutter having a cutter bar B for guiding a chain C carrying cutting picks D for cutting a kerf E in the coal F.

The coal cutter A illustrated may be of the type adapted to be operated electrically, and

the motor (not shown) for operating the chain C and also for bodily actuating the cutter A relatively to the work may be housed in a casing G of the coal cutter.

On the casing G may be mounted a turntable H having a central aperture J to accommodate a trunnion K mounted on the easing G to form a pivot for the turn-table H.

The parts so far described may be of well known types as may also be a cable drum L intended to be supported by. the turn-table H and carrying a cable 0 leading from a source of electrical energy supply to the motor or motors whereby the coal cutter is actuated. v

Preferably the drum L is mounted on a hollow shaft P to which, it may be fixedly secured in any suitable manner by a key Q,.

In accordance with the present invention, one end of the drum L is supported by a member R which has a recess S to receive an extension T of the drum L, and near the outer end offthe recess may be formed grooves U for packing members V which encircle the extension T to prevent themtrance of dust along the cooperating surfaces of th-e'extension and the'recess. In order to reduce friction between the wall of the recess Sandthe extension Tto a minimum the shaft P is seated in a frictionless bearing W disposed in the recess S.

vSecured to the outer end of the member B inany suitable andconvenient manner, as for instance, by means of'bolts X is a rotary pneumatic motonY having a gear train Z- .which extends into a recess 1) of the member B so that the member R in effect also serves as a gear casing for the motor Y. The pressure fluid for actuating the motor Y may be conveyed thereto from a source of supply by a connection Y. I I l a Y The motor Y may be of the-small portable type commonly employed for threading nuts.

on bolts and similar work. The driven gear 0 of the motor therefore has a socket dfor the reception of a working implement such as a drill'or wr'ench, whic h motors of this type are adapted to accommodate. In thepresent' instance,"instead of a working} implement, a shaft 6 is inserted in the socket d and is journaled in a bushing f inserted in a wallg whi ch divides the recess 32 from the recess S and serves 'asan abutmentfor shoulders 2 and? on the shafts P and e-respectively which actagainst opposite sides of the wall. The free end of the shaft 6 may be provided with grooves h to interlockingly engage introverted ribs in the end of the drum shaft P.

Preferably formed integrally with the member R is a standard is havin a base 0 which is seated on the turntable and secured thereto in this instance by means of bolts 19. a 1

In practice, the motor Y may be disposed on the side of the member R and the shaft 6 entered" into splined engagement with the shaft P. The motor Y may then be secured tion Y so that the motor will constantly tend to rotate in a direction for winding the cable on the drum L in accordance with the movement of the coal cutter A relatively to the work. By using a motor capable of delivering only comparatively low power, the cable may be constantly wound tightly on the drum L with the consumption of only a minimum amount of pressure fluid for driving themotor.-

j Whenever the coal cutterA is being'moved in a direction in which it becomes necessary, to unwind a portion of thecable from the drum L,it will not be necessaryfor the motor I to be first reversed since the resistance which 7 it exerts on the drum L tending to wind the cable'thereon may be readily overcome so that the motor may then be run in a reverse direction by the cable 0. Irrespective of the direction in which the coalcutter may move the motor will at all times assure againstthe contact of the cable With the. rough surfaces of; the floor whereby the cutting apparatus is supported, and consequently the cable vO will 7 be protected against chafing. This is highly essential,particularly when used in coal min-.

'ing operations in which destructive explosions frequently occur due to the formation of a spark by a' peeled cable coming in contact withother metallic substances.

r I claim: g V I In a motor connection, the combination of a member and a standard for supporting the member, recesses in the ends ofv the member, av

Wall between the recesses and having a bore, a driven member journaled in one recess and having a shoulder seating against the wall, a motor secured to the member and having a gear train extending into the other re- 40 cess, a shaft driven by the gear train journalled in the bore and slidably interlocking with the driven member, and a shoulder on the shaft acting against the wall to limit 7 movement of the shaft in the direction of the driven member.

1 In testimony whereof I have signed this specification. v

' CHARLES S. BAKER. 

